Technical
Core ArchitectureARM
Data Bus Width32 b
Frequency55 MHz
HS Code8542.31.0025
InterfaceI2C, I2S, SPI, UART, USART, USB
Max Frequency55 MHz
Max Operating Temperature85 °C
Max Supply Voltage3.6 V
Memory Size32 kB
Memory TypeFLASH
Min Operating Temperature-40 °C
Min Supply Voltage1.65 V
Number of ADC Channels8
Number of I2C Channels1
Number of I/Os21
Number of Programmable I/O21
Number of PWM Channels4
Number of SPI Channels1
Number of Timers/Counters3
Operating Supply Voltage1.8 V
Oscillator TypeInternal
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
RAM Size8 kB
Watchdog TimerYes